Siemens SIMATIC TIWAY 1 User Manual page 43

OPERATION AND APPLICATION
The total macro memory requirements can be calculated by summing the
memory for each individual macro. For example, suppose that you use one
macro to connect secondary #7, another macro to issue a Primitive 45 bytes long
expecting a response 30 bytes long, and another macro to disconnect secondary
#5. The total memory required for these three macros is:
Macro #1, Connect
Macro #2, Primitive
Macro #3, Disconnect
Total Memory Required
Example 2–2 Macro Memory Requirements
Host
Computer
UniLink Host Adapter
Figure 2–15 Host Computer Multiprocessing Application
= 22
= 22 + 45 + 30
= 22 = 22
142 Bytes
UNILINK
Example
2–33
= 22 22
= 97(+1) 98
22
"""
Job Directory
Job A
Job B
Job C
TIWAY I
UNILINK HOST ADAPTER
USER MANUAL